Information to be given when making a claim or obtaining payment of allowance
16. Every person who makes a claim for or is entitled to an allowance and every person to whom or on whose behalf sums are payable by way of an allowance shall furnish in such manner and at such times as the Secretary of State may determine such certificates, documents, information and evidence affecting the right to the allowance or to the receipt of any sums payable by way of any allowance as may reasonably be required by the Secretary of State and, if so required, shall for that purpose attend at such office or place as the Secretary of State may direct.